{
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\begin{tabular}{l*{4}{c}}
\hline\hline
          &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         &\multicolumn{1}{c}{(3)}         &\multicolumn{1}{c}{(4)}         \\
\hline
1.S#1.T   &   -0.008         &   -0.051         &   -0.143\sym{**} &   -0.086\sym{*}  \\
          &  (0.021)         &  (0.049)         &  (0.065)         &  (0.046)         \\
\hline
\(N\)     &    16314         &    16314         &    16314         &    16314         \\
\(R^{2}\) &    0.166         &    0.168         &    0.214         &    0.125         \\
\hline\hline
\end{tabular}
}
